/ Thesaurus / N Synonyms of needfully Find synonyms for: Adverb1. necessarily, needfullyusage: in an essential manner; "such expenses are necessarily incurred"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language